Algo trading, the honest version

• Why I Built JoNeTree

  I had a job, a TradingView account, and about forty minutes a day to watch a chart that needed watching all day.

• My First Strategy Was Garbage — the Backtest Told Me So

  I found the Strategy Tester tab about a week after I found Pine Script. That week was expensive to skip.

• Curve Fitting Nearly Ended It — Here's What Actually Fixed It

  The strategy that backtested beautifully lost real money. The reason has a name, and once I knew the name, I knew what to do about it.

• Why I Stopped Trusting Backtests — Even Good Ones

  Walk-forward optimisation fixed the curve-fitting problem. It didn't fix the fact that I still hadn't watched the strategy trade a single real signal before trusting it.

• From One Script to a Server: Building the Thing That Became JoNeTree

  Manual walk-forward testing across strategies, timeframes and assets does not scale to a person with a job. So I stopped doing it manually.

• Leverage, Stop-Loss and Target Are One Decision

  Three settings that look independent are locked together by a single equation. Here is the equation, and how to work backwards from the only number you actually have an opinion about.